I have been thinking about this thread today and been looking at my current formula I use. I think I need to factor in other data to get it more accurate. The way I now see it I have three inputs: Distance (miles, converted to feet), elevation gain (feet) and heart rate (bpm) (effort) leaving me with one output: speed (mph). I have now calculated my performance in % using these. This makes each of my rides comparable with each other not just based on speed alone. I have used:
=sum(1)-(((distance in miles x 5280)/elevation gain in feet) / (average mph*average heart rate) It seems accurate enough as the equation needs the elevation gain to match the distance travelled to score 100% performance.
Does anyone else calculate their performance somehow ? I'd be interested to see how you do it.
I've got eighteen years worth of Audax brevet cards in a filing cabinet. Unfortunately, not many are from Altitude Award points scoring rides.
When I joined AUK in 1994, the first 200 I rode was The Castleton Classic, which was advertised as 2500 m of climbing because Beryl did a 'contour count' to ascertain the upward elevation riding.
This year's is listed as 2963 ( how accurate? ) and is by digital terrain data.
2500 m of climbing in 218 km in 1995 earned ZERO points. In 2013, it is 3 points.
In 1995, the route went up the long drag from Leek to Buxton. It was 4.4 km of upward rising 225 m. That's a Cat 2 !
How could a ride with a Cat 2 climb in it score ZERO Altitude points?
In 1995, I was told "It hasn't got many hills in it, cus its got no AAA points." Now, the Castleton Classic can be seen on the calendar as a 3 pointer, indicating it DOES have hills.